Down Grading OS to Snow Leopard is Painful

Posted by Groovy3 
Down Grading OS to Snow Leopard is Painful
May 04, 2018 03:58PM
I have imac 2011 with recient High serra installed - ouch
Wanting to downgrade and install OS x 10.6.3 from disk -
I have disk -

tried to make Dual boot drive and No Love -

so after 3 days I am giving up and taking imac
to Independent apple repair location-

called Apple and was told my imac came with
Snow Leopard stock so it should run it -

called 5 apple independent repair stores and several said
they did not know if downgrade was possible-
( I have read that High Sierras is Special ) ouch

Found a place in austin said they could do it and the person
sounded Very knowledgeable So I have hope they can install-

Is there any things I should have to make downgrading go smooth
any software I should take with me to repair shop —
Quicktime pro etc- ????????
(if you have links to download would be greatly appreciated)
want to get to os x 10.6.8 I think ?

I’m not much of a computer nerd -
I really Enjoyed using FCP7
for me it worked almost Flawless for years -
can doing anything I want 3 different ways in UI -
plus map keyboard - Buttons - nice key framing -
add in motion and soundtrack equals a Sweet Studio-
Liked Soundtrack a Lot


I ordered disk copy of Snow leopard -
it takes exactly 30 days to get disk from apple
No Download available OS x 10.6 / 10.3 is -
have to use disk and wait 30 days -

purchased a disk from retailer for $50
got next day - 10.6.3
Re: Down Grading OS to Snow Leopard is Painful
May 04, 2018 09:46PM
simplest solution would be to do a clean instal of the OS, and all your apps.

make a back up of our drive first, though.

Re: Down Grading OS to Snow Leopard is Painful
May 05, 2018 01:14AM
I tried to do clean install High serra won’t erase completely -
it leaves Base OS section that Blocks OS downgrade-
Re: Down Grading OS to Snow Leopard is Painful
May 05, 2018 07:13AM
The disk can be completely erased, or even replaced, but your installation of High Sierra included an (unasked for) upgrade to your computer's own firmware. The new firmware is what prevents installation of older operating systems.

Mac firmware can't be user-downgraded. A competent shop can do it. However, dual-boot, with old and new operating systems, is do-it-yourself possible even with the new firmware. To make this you first install the desired old operating system on another disk using another Mac that has old firmware. Then you clone ("restore" ) that disk to a partition of the disk on your computer. (This requires the partition to be formatted HFS+, not APFS.) The restoration, unlike an installation, is not prevented by the new firmware.

Dennis Couzin
Berlin, Germany
Re: Down Grading OS to Snow Leopard is Painful
May 05, 2018 02:53PM
Thanks Dennis and Nick -

I am taking Imac to shop to have Snow Leopard installed -
going to try to have dual boot drive done so that
I can still surf online safely
Dual boot drive is Possiable ? correct ?

I don’t have 2nd mac to to install from and was trying to
use USB drive but I could not make it work -

I am not a nerd but i try - lol

Thanks for your help -
I am Excited to have a smooth running FCP7
system again - Jay
Re: Down Grading OS to Snow Leopard is Painful
May 22, 2018 04:19PM
took mid 2011 imac to independent mac repair shop to have OSX downgraded to
OSX 10.8.6 snow leopard - shop tried but said it was not possiable -
something to do with firmware had been upgrade -

Shop installed El Capitan -
Im installing FCP 7 studio right now and have not
run fcp yet - but doubt is going to operate well

Any ideas on how I can get a machine to run fcp7 on
maybe a Hackentosch ?

Thanks- Jay
Re: Down Grading OS to Snow Leopard is Painful
May 27, 2018 05:04AM
i haven't used El Capitan, but am about to.
I've got a close of my Yosemite machine to boot from if i hate El Cap!

biggest drawback i can see right away is that Compressor would not install,
and Cinema Tools does not work under El Cap.

please let me know how your El Capitan experience goes.

Re: Down Grading OS to Snow Leopard is Painful
May 31, 2018 10:19AM
I've had a miserably experience with El Capitan, but we have very specific needs at our company. We did, however, receive good support, it just didn't work out.
Re: Down Grading OS to Snow Leopard is Painful
June 15, 2018 10:17AM
Thank You Dcouzin for taking the time to send the info you sent in PM -

I dont have access to backups of older system drive at the moment

but there is a independent mac repair shop in Austin tx that I am sure
can down grade OS to Snow leopard and roll back the firmware that apple installed with High searra
The shop is Techtronics and it is located right in the hell hole of austin traffic disaster
and I am living in / driving a RV so getting there is a giant pain in asss -

Terri the lady I spoke with says she can do it for me and Im sure she can -
going to cost me $100 but will be. worth it -

I also putchase a earily 2012 macbook pro that after I test FCP7 for a while
im going to have Techtronics downgrade OS on it also -

on Imac with El capatian FCP runs ok but I have only had time to test a few short timelines but I did drop in a huge amount of effects and it seemed to do ok

When I installed FCP studio I made the mistake of installing Soundtracks media and it took 7 hours to complete install - doing this used up all the battery in my RV -

I plan on getting imac OS downgraded further next week and I will report back
on how things are running — Jay
Re: Down Grading OS to Snow Leopard is Painful
June 15, 2018 07:09PM
Jay, if FCP7 "seemed to do OK" under El Capitan then you might be in luck. FCP7 is a huge program that each user uses differently. Magnani's report of El Capitan woes was specific to his company's uses. Continue trying FCP7 under El Capitan until you run into something not working that you're sure worked under Snow Leopard. Then think rollback.

As I explained in the 5 May post, rollback of the firmware, requiring a competent shop, is probably unnecessary. Find someone to lend you a USB stick with an earlier Mac operating system on it. See if it can boot your iMac. (Plug in the stick and start the computer with the Alt key pressed.) If it can, then it can also when "restored" to your iMac's hard drive. Making an empty partition on your hard drive might be a little trouble, but these are things amateurs can do with their Macs -- at least before High Sierra.

Dennis Couzin
Berlin, Germany
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